Question

The mean of 200 observation was 50 .later on it was discovered that observation was wrongly read as 92 and 8 instead of 192 and 88 .find out correct mean.​

Answer 1

Answer:

60

Explanation:

192+88=280

280/4=60

Answer 2

as the mean 200.observations is 50. so

total= 200*50 = 10000

now,

different due to misread

= (192- 92) + (88-8) = 100 + 80 = 180

then add 180 to the total value

=10000 + 180

= 10180

so correct mean = 10180 / 200

= 50.9